Abstract: From September to November in 2015, the behavioral data of Macaca thibetana were collected and then coded by use of the "posture-act-environment" (PAE) coding system which concerns the posture, acts, environment, and ecological function of behaviors in the Maoxiangba region of Tangjiahe National Nature Reserve. In total,15 postures, 91 acts and 116 behaviors of M.thibetana were recorded and identified, and the relative frequency of each behavior in relation to gender and age was described.